silverado1ss89

So i just got 89 rcsb not so long ago. it has a 5.7 tbi 700r4.. engine is a 98 vortech block but still tbi.. Just wanted to see what upgrades i can do to this truck with this style of engine...
headers .. intake ... exhaust .. gears.. stall...???
got some craigers wheels on it right now... (light *** hell)
front 215/70/r15 rears 275/60/r15
.. truck will be use around town and long trips...(not a DD)

any help will be appreciated...

zero2sixT

iTrader: (4)

first thing I'd do is a 411 pcm mod

03 BLACKOUTSSS

iTrader: (3)

pics please. I dig the older stuff. makes me want to sell mine as a roller and put the DT in an older chassis

silverado1ss89

any links or where can i find that??? is that like a tune or hanld device???

silverado1ss89

still needs a lot of work.. just in 4 months that i have it.. looks way different.. needs new paint job but no body damage.. will post some pics later on today

A Low Dime

iTrader: (13)

I dont think an 0411 PCM will run the TBI.

offroadrider12

96+ mod. Not for TBI

zero2sixT

iTrader: (4)

Its an obdII pcm that is fully hacked. Something you could tune with hp tuners.

So it's running on stock manifolds/exhaust? If so, LTs and a bigger y-pipe would be my first move.

I would've bet money I read a thread somewhere (fullsizechevy, maybe) that someone was running tbi with a 411. I can't find it though.

I'm guessing it won't b/c of trying to control two "injectors"? I know the old pcms have a mpfi mode.

silverado1ss89

just has a vortech engine so better flowing heads etc....

zero2sixT

iTrader: (4)

The Ultimate 88-98 OBS Performance Toolbox

This thread is old, but still has some good information. I had a '88 rscb with a L05 in it. It had a h/c/i setup on it. Ran alright for what it was. Could never get a proper tune for it. Getting it tuned right is going to be your biggest hurdle with mods. There are some mail order tuners out there. Seems like a bitch to work with a tuner that way though. And the equipment required to make it easy to data log, and recalibrate the pcm isn't that cheap.

I doubt you want to dump a lot of money into this truck. I wouldn't want to dump a lot into a sbc, having a ls based ride. But just putting this up, just to put it up I guess.

Edelbrock.com - Electronic Fuel Injection - Pro-Flo XT - Introduction

Thought it was cool. Would make me second guess a ls swap, if I had an obs.

Good luck man